Switched-Capacitor Converter State Model Generator

Henry, Jordan; Kimball, Jonathan W.

doi:10.1109/tpel.2011.2173953

Cited by 62 publications

(18 citation statements)

References 17 publications

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“…Similarly, the actual voltage generated by the photodiode at the falling edge of clk2 can be calculated by (27) and (28).…”

Section: Joint Model Of the Photodiode And The Capacitive Dc/dc Convementioning

confidence: 99%

“…In [19][20][21][22][23][24][25][26][27], charge pump circuits are studied in the steady-state regime, extracting information about gain or area. In [19][20][21][22][23][24][25][26][27], charge pump circuits are studied in the steady-state regime, extracting information about gain or area.…”

Section: Introductionmentioning

confidence: 99%

“…The models of DC/DC converters reported in the literature address the analysis of charge pumps from either a static or a dynamic point of view. In [19][20][21][22][23][24][25][26][27], charge pump circuits are studied in the steady-state regime, extracting information about gain or area. However, a dynamic analysis is essential in energy harvesting applications where the load of the charge pump circuit, which is purely capacitive, is continuously charged and discharged according to the charge demanded by the system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamic joint model of capacitive charge pumps and on‐chip photovoltaic cells for CMOS micro‐energy harvesting

Ferro

López

Brea

et al. 2016

Circuit Theory & Apps

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On-chip energy harvesting by means of integrated photovoltaic cells in standard CMOS technology can be successfully used to recharge or power-up integrated circuits with the use of charge pumps for voltage boosting. In this paper, a tool to facilitate the design of such structures is proposed consisting of an accurate model of the joint dynamics of the micro-photovoltaic cell and a capacitive DC/DC converter in the slowswitching limit regime. The model takes into account both the top and bottom parasitic capacitances of the flying capacitors. We assume a classical model for the photodiode whose photogenerated current is extracted from device-level simulations. The joint model is verified by circuit-level simulations achieving high accuracy and computation time savings of up to 1700×. The joint model shows that the voltage generated by an integrated photovoltaic cell connected to a capacitive DC/DC converter is not constant even under constant illumination. This phenomenon can only be reproduced through the joint model and failing to take it into account results in an error in the estimation of the time needed by the DC/DC converter to reach a given output voltage. We also demonstrate that the maximum output voltage reached by a DC/DC converter in the slow-switching limit regime when a photovoltaic cell is used as energy transducer depends on the switching frequency. Finally, the applicability of the model is illustrated through the optimization of time response and charge efficiency for the Dickson, Fibonacci, and exponential topologies in the case of implantable devices.

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“…Similarly, the actual voltage generated by the photodiode at the falling edge of clk2 can be calculated by (27) and (28).…”

Section: Joint Model Of the Photodiode And The Capacitive Dc/dc Convementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dynamic joint model of capacitive charge pumps and on‐chip photovoltaic cells for CMOS micro‐energy harvesting

Ferro

López

Brea

et al. 2016

Circuit Theory & Apps

View full text Add to dashboard Cite

show abstract

“…Recently, some other interesting topologies have been published in [28]- [30]. In [28], a hybrid-source impedance network with the dc link of series-connected z-sources is presented for enhancing the three-phase ac voltage levels, but it is not suitable for STATCOM application because of the utilization of large amount of dc sources.…”

Section: Introductionmentioning

confidence: 99%

“…The literature [29] describes a multilevel circuit topology based on switched-capacitors and diodeclamped converters. The model related to switched-capacitor converters is given in the literature [30]. This kind of converters can successfully produce high-voltage levels and the issue with dc voltage balancing can be easily solved by choosing proper switching sequences.…”

Section: Introductionmentioning

confidence: 99%

A Novel DC Voltage Control Method for STATCOM Based on Hybrid Multilevel H-Bridge Converter

Liu

Lin

et al. 2013

IEEE Trans. Power Electron.

107

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This paper presents a transformerless static synchronous compensator (STATCOM) system based on hybrid multilevel H-bridge converter with delta configuration. This hybrid multilevel STATCOM is characterized by per-phase series connection of a high-voltage H-bridge converter operating at fundamental frequency and a low-voltage H-bridge converter operating at 5 kHz without any other circuit for dc voltage control. A new control strategy is proposed in this paper with focus on dc voltage regulation. Clustered balancing control is realized by injecting a zero-sequence current to the delta-loop, while individual voltage control is achieved by adjusting the fundamental content of ac quasi-square-waveform voltage of high-voltage converter. A downscaled experimental prototype rated at 100 V and 3 kVA is constructed in author's laboratory. Experimental results show that the hybrid multilevel STATCOM performs satisfactory not only improving efficiency and waveform quality, but also compensating reactive power and negative-sequence current while maintaining dc voltage at the given value. Index Terms-Cascade H-bridge, dc voltage control, hybrid multilevel, static synchronous compensator (STATCOM).

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High-Ratio Voltage Conversion in CMOS for Efficient Mains-Connected Standby

Meyvaert¹,

Steyaert²

2016

Analog Circuits and Signal Processing

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Alle rechten voorbehouden. Niets uit deze uitgave mag worden vermenigvuldigd en/of openbaar gemaakt worden door middel van druk, fotokopie, microfilm, elektronisch of op welke andere wĳze ook zonder voorafgaande schriftelĳke toestemming van de uitgever.All rights reserved. No part of the publication may be reproduced in any form by print, photoprint, microfilm, electronic or any other means without written permission from the publisher.Naast de vrienden op het werk wil ik de ELEK2009 vriendengroep bedanken voor het afblazen van stoom in de vorm van sport, spel & streekbieren. Het is dan ook erg plezant om deze groep te hebben zien uitbreiden naar meer vriendjes, vriendinnetjes en kindjes. De licht bedoelde toeval om collectief Kessel-Lo in te palmen, met een antenne in 't Stad, is eveneens een leuke ontwikkeling.

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Switched-Capacitor Converter State Model Generator

Cited by 62 publications

References 17 publications

Dynamic joint model of capacitive charge pumps and on‐chip photovoltaic cells for CMOS micro‐energy harvesting

Dynamic joint model of capacitive charge pumps and on‐chip photovoltaic cells for CMOS micro‐energy harvesting

A Novel DC Voltage Control Method for STATCOM Based on Hybrid Multilevel H-Bridge Converter

High-Ratio Voltage Conversion in CMOS for Efficient Mains-Connected Standby

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